Question

The wheel of a car has a diameter of 50 cm. If the vehicle travels at a speed of 72 km / hr, how many times will the wheel be completely rotated in 1 second?

Answer 1

Answer:

12.73 rotations/sec

Step-by-step explanation:

diameter given 50cm

so radius=25cm

from this find circumference, as C is the distance the wheel travels in one rotation

C=2*pi*r

=2*22/7*25=157cm =1.57m

given speed=72000 m/60min

                   =1200m/min

divide speed /min with circumference to get rotations per min

=1200/1.57=764.33 rotations /min

and convert into 1 second by

764.33/60=12.73 rotations/sec

MARK AS BRAINLIEST BRO